A physical layer simulator for WiMAX

Simulating the WiMAX Physical Layer in Rayleigh Fading Channel

“…Comparing the experimental results reported in [4] with those presented in figure 9 it can be observed that the fading channel produces a deterioration of performances of 2.5dB at BER=0.01 for the QPSK modulation and of 7.5dB at the same value of BER for the 16 QAM modulation. This is an important conclusion because it permits the selection of the distance between the mobile station (MS) and the BS where the QPSK can be substituted by the 16 QAM, in the AMC operation mode.…”

“…3. Its structure is based on [4]. Its blocks implement the PHY layer processing operations described in the previous section.…”

“…BER and BLER statistics may be computed. The present paper represents a continuation of [4] where only the case of AWGN channel was considered.…”

Analysis of WiMAX Physical Layer Using Spatial Multiplexing

“…Removing the guard interval becomes equivalent to removing the cyclic prefix. Performing a FFT on the received samples after the cyclic prefix is discarded; the periodic convolution is transformed into multiplication, as it was the case for the analog Multi Carrier receiver [11]. Then demodulation, deinterleaving as well as FEC decoding using Viterbi Decoder and at last derandomization.…”